EXFO Oy (commonly known as EXFO Oy) is a mobile network operator in Finland assigned PLMN code 244-23 by the national telecommunications authority.

The MCC 244 identifies Finland, while MNC 23 uniquely identifies this operator within the country. Together they form the PLMN (Public Land Mobile Network) identifier used by mobile devices for network selection, SIM card identification, and international roaming.

This assignment was last reported in ITU Operational Bulletin #1280 (Nov. 15, 2023). Search all MCC/MNC codes or view all Finland operators .